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====== Option +converters+
Specifies a single field converter name or \Proc,
or an \Array of field converter names and Procs.
See {Field Converters}[#class-CSV-label-Field+Converters]
Default value:
CSV::DEFAULT_OPTIONS.fetch(:converters) # => nil
The value may be a single field converter name:
str = '1,2,3'
# Without a converter
ary = CSV.parse_line(str)
ary # => ["1", "2", "3"]
# With built-in converter :integer
ary = CSV.parse_line(str, converters: :integer)
ary # => [1, 2, 3]
The value may be an \Array of field converter names:
str = '1,3.14159'
# Without converters
ary = CSV.parse_line(str)
ary # => ["1", "3.14159"]
# With built-in converters
ary = CSV.parse_line(str, converters: [:integer, :float])
ary # => [1, 3.14159]
The value may be a \Proc custom converter:
str = ' foo , bar , baz '
# Without a converter
ary = CSV.parse_line(str)
ary # => [" foo ", " bar ", " baz "]
# With a custom converter
ary = CSV.parse_line(str, converters: proc {|field| field.strip })
ary # => ["foo", "bar", "baz"]
See also {Custom Converters}[#class-CSV-label-Custom+Converters]
---
Raises an exception if the converter is not a converter name or a \Proc:
str = 'foo,0'
# Raises NoMethodError (undefined method `arity' for nil:NilClass)
CSV.parse(str, converters: :foo)
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